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(No Model.)

J. J. JOHNSTON.

DOOR BELL. N0. 264,884. Patented Sept. 26, 1882.

n. PETERS. lllllllll raphar. Wnhlngion. a, c.

UNITED STATES PATENT OFFICE;

JAMES J. JOHNSTON, OF COLUMBIANA, OHIO, ASSIGNOR TO THE UNITED STATES IMPROVEMENT COMPANY, (LIMITED,) OF SAME PLACE.

DOOR-BELL.

SPECIFICATION forming part of Letters Patent No. 264,884, dated September 26, 1882.

Application filed February 11, 1882. (N model.)

to the letters of reference marked thereon.

struction and operation.

My invention relates .to an improvement in door-bells; and it consists in the peculiar construction, combination, and arrangement of the several parts hereinafter described.

To enable others skilledin the art with which my invention is most nearly connected to make and use it, I will proceed to describe its con- In the accompanying drawings, which form part of this specification, Figure 1 is a vertical section of the door-frame, with the several parts of the door-bell in juxtaposition with relation to each other. Fig. 2 is a vertical section of the same at line y y of Fig.1. Fig. 3 is an end view of the cap for the lever-charm ber. and its helve. Fig. 5 is a top view of the same. Fig. 6 is a side view of the rod for operating the beILhammer. a

In the accompanying drawings, Arepresents the rod for operating the bell-hammer, and is constructed of malleable cast-iron, and is furnished with a detachable end piece, B, having a projection, G, with beveled sides a. b, as shown in Fig. 4. "The chamber for the rod A is constructed in two sections, D E, and made from iron tubing such as gas-pipe) of different diameter. Said sections are furnished with screw-threads for coupling them together and for the reception of end caps, F G, and disk L, as shown in Fig. 1. The section E of the chamber for the rod A is furnished with a slot, 0, for the projection 00f the detachable end piece, B, which slot serves as a guide for said projection. The disk L has a projection, M, having a recess in its outer end, in which, at d, is pivoted the helve O of the bell-hammer N. On the end of the helve O is a piece, P, having beveled sides of. The helve O is constructed of sprin g- Fig. 4 is a side view of the bell-hammer steel, and at g is made thin, for the purpose of giving the part It a vibratory spring action, as indicated by the dotted lines in Fig. 4, which also represents the form of said helve. The projection M on disk L is furnished with a spiral spring, 1*, and a piece, 13, made in the form of the letter L, the horizontal limb of which straddles the helve O of the bell-hammer T. The bell R is attached to the cap-piece F on the end of the section E of the rod-chamber.

The rod A is furnished with a spiral spring,j,

one end of which acts against the collar is on the rod A, and the other end acts against the cap-piece G. The part lot the rod A is square when viewed in cross-section, and fitted to a square opening, m, in the cap G. On the outer end of the rod A is secured a knob in the usual way, and of ordinary construction.

In hanging the bellthe following isrthe manner'of so doing: The sections D E, which form the chamber for the lever A, are screwed together. The cap G'is then screwed upon the outer end ofthe section D. An opening is then bored in the door-frame, first by means of an auger or bit which will cut an opening the diameter of which is a little less than the diameter of the section D, including screw-threads, said opening being bored sufficiently deep to receive the section I). The operator then, by means of another auger or hit which will make an opening equal to the diameter of the section E, bores the opening for said section. The two sections, united as described, are then placed in said openings, and the operator, by means of a wrench placed on the cap G, (whose walls are hexagonal,) screws the sections home, as shown in Fig. 1. He then screws on the section E the disk Ir, which, when screwed firmly home, removes the cap G, places the piece B in thesection E, with the projection O in the slot c. He then rotates the rod A until the piece B Fig. 1, which completes the hanging of the bell, the operation of which is as follows: By pulling the knob Q, the bevel a of the projection 0 acts against the bevel f of the piece P on the end of the helve 0, which will cause the piece 2' to compress the spiral spring 1" until the projection 0 passes the piece P. The spring 1" will then, by means of the piece '5, throw back fore described, cheapness of construction, compactnessof parts, and ease of hanging are secured.

Having thus'described my invention, what I claim as new, and desire to secure by Letters 2 5 Patent, is-

In adoor-bell, the combination of the chamber for the operating-rod, constructed in two sections of tubing of different diameters, and having caps G and F, the lever A, having 001- 0 lar 7c and detachable piece B, the disk L, having projection M, spring 1', piece 6, helve O, hammer N, and the bell R, all constructed, arranged, and operating substantially as herein described, and for the purpose set forth.

JAMES J. JOHNSTON.

Witnesses:

A. G. JOHNSTON, T. D. D. OURAND. 

